19661719

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{8237}}^1$

素因数の和:8286

約数の個数: 16

約数和(自身を含む): 25307136

約数和(自身を除く): 5645417

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 8237, 57659, 90607, 255347, 634249, 1787429, 2808817, 19661719]

約数ペア:

[(1, 19661719), (7, 2808817), (11, 1787429), (31, 634249), (77, 255347), (217, 90607), (341, 57659), (2387, 8237)]